feed off

• • 以…为食物(或能量、材料等)的来源，从…获得供应，靠…给养：

    When fresh food and water are not available,the camel can feed off its hump.

    在没有新食物和水供应时，骆驼从它的驼峰中获取能量。

  • 从(碟子、盘子等)中取食：

    The animals can easily feed off the floor.

    动物可以较为轻松地从地上取食。

  • 把(牲畜)养肥以出售(或屠宰)：

    He wants to feed off the chickens you gave him.

    他想把你给他的鸡养肥。

  • 掠夺；捕食：

    an animal feeding off smaller animals

    以较小动物为食的动物